6 A B D Which one of the following statements relating to intangible assets is true? All intangible assets must be carried at amortised cost or at an impaired amount; they cannot be revalued upwards The development of a new process which is not expected to increase sales revenues may still be recognised as an intangible asset Expenditure on the prototype of a new engine cannot be classified as an intangible asset because the prototype has been assembled and has physical substance Impairment losses for a cash generating unit are first applied to goodwill and then to other intangible assets before being applied to tangible assets